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Finding the Fourth Proportional to 260,017.60, 390,026.40 and 242,521.60

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Solution

The fourth proportional to 260,017.60, 390,026.40 and 242,521.60 is: 363,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,017.60 : 390,026.40 = 242,521.60 : x
  2. Step 2: Convert to fraction form
    260,017.60/390,026.40 = 242,521.60/x
  3. Step 3: Cross multiply
    260,017.60x = 390,026.40 × 242,521.60
  4. Step 4: Simplify right side
    260,017.60x = 94,589,826,570.24
  5. Step 5: Solve for x
    x = 94,589,826,570.24/260,017.60
  6. Step 6: Final answer
    x = 363,782.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.